Weitz, B. A. (2007). Selling: Building partnerships. Boston: McGraw-Hill/Irwin.
Trích dẫn kiểu ChicagoWeitz, Barton A. Selling: Building Partnerships. Boston: McGraw-Hill/Irwin, 2007.
Deismireacht MLAWeitz, Barton A. Selling: Building Partnerships. Boston: McGraw-Hill/Irwin, 2007.
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